Synthesis and Antibacterial Evaluation of New Sulfone Derivatives Containing 2-Aroxymethyl-1,3,4-Oxadiazole/Thiadiazole Moiety
作者:Shihu Su、Xia Zhou、Guoping Liao、Puying Qi、Linhong Jin
DOI:10.3390/molecules22010064
日期:——
Sulfones are one of the most important classes of agricultural fungicides. To discover new lead compounds with high antibacterial activity, a series of new sulfone derivatives were designed and synthesized by introducing the aroxymethyl moiety into the scaffold of 1,3,4-oxadiazole/thiadiazole sulfones. Antibacterial activities against three phytopathogens (Xanthomonas oryzae pv. oryzae, Ralstonia solanacearum
砜类是最重要的一类农用杀菌剂。为了发现具有高抗菌活性的新先导化合物,通过将芳甲基部分引入1,3,4-恶二唑/噻二唑砜的支架中,设计并合成了一系列新的砜衍生物。体外测定了对三种植物病原体(米黄单胞菌 pv. oryzae、青枯病菌、轴突黄单胞菌 pv. citri.)的抗菌活性。与商业杀菌剂的对照和一些报道的砜类杀菌剂相比,7 种化合物 5I-1-5I-7 表现出显着更高的活性,EC50 值范围为 0.45-1.86 μg/mL 对米曲霉和 1.97-20.15 μg/mL青枯菌。令人振奋的是,5I-1、5I-2 和 5I-4 显示出显着的体内抗稻瘟病活性,保护效果达 90.4%,在 200 μg/mL 时分别为 77.7% 和 81.1%,远高于双美噻唑 (25.6%) 和噻二唑-铜 (32.0%)。并初步检验了活性衍生物的不同植物毒性。结果表明,2-aroxymethyl-1,3,4-o